./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f5906986fe70be99cb7145aeb70b9be3804e6f6ae12fcaa8e449985abfd2c954 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 18:12:38,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 18:12:38,131 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 18:12:38,137 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 18:12:38,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 18:12:38,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 18:12:38,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 18:12:38,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 18:12:38,160 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 18:12:38,160 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 18:12:38,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 18:12:38,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 18:12:38,160 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 18:12:38,160 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 18:12:38,161 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 18:12:38,161 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 18:12:38,161 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 18:12:38,162 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 18:12:38,162 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 18:12:38,162 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 18:12:38,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 18:12:38,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 18:12:38,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 18:12:38,162 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 18:12:38,162 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 18:12:38,162 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 18:12:38,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 18:12:38,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 18:12:38,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 18:12:38,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:12:38,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 18:12:38,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 18:12:38,163 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 18:12:38,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 18:12:38,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 18:12:38,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 18:12:38,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 18:12:38,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 18:12:38,164 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 18:12:38,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 18:12:38,164 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5906986fe70be99cb7145aeb70b9be3804e6f6ae12fcaa8e449985abfd2c954 [2025-03-08 18:12:38,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 18:12:38,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 18:12:38,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 18:12:38,381 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 18:12:38,382 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 18:12:38,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness_negated.i [2025-03-08 18:12:39,527 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc49af6f6/5d9b6f79fe044bdebb6ebb375f2244f3/FLAG726eef764 [2025-03-08 18:12:39,960 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 18:12:39,962 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness_negated.i [2025-03-08 18:12:39,989 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc49af6f6/5d9b6f79fe044bdebb6ebb375f2244f3/FLAG726eef764 [2025-03-08 18:12:40,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc49af6f6/5d9b6f79fe044bdebb6ebb375f2244f3 [2025-03-08 18:12:40,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 18:12:40,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 18:12:40,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 18:12:40,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 18:12:40,103 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 18:12:40,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:12:40" (1/1) ... [2025-03-08 18:12:40,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c8b7d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:40, skipping insertion in model container [2025-03-08 18:12:40,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:12:40" (1/1) ... [2025-03-08 18:12:40,153 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 18:12:40,297 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness_negated.i[4501,4514] [2025-03-08 18:12:40,302 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness_negated.i[4561,4574] [2025-03-08 18:12:40,760 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:40,761 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:40,761 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:40,761 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:40,762 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:40,768 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:40,769 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:40,770 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:40,770 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,034 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,034 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:12:41,090 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 18:12:41,099 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness_negated.i[4501,4514] [2025-03-08 18:12:41,099 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness_negated.i[4561,4574] [2025-03-08 18:12:41,139 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,140 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,140 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,140 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,141 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,146 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,146 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,147 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,147 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,201 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,202 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:12:41,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7671-7682] [2025-03-08 18:12:41,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:12:41,377 INFO L204 MainTranslator]: Completed translation [2025-03-08 18:12:41,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41 WrapperNode [2025-03-08 18:12:41,378 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 18:12:41,379 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 18:12:41,379 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 18:12:41,379 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 18:12:41,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41" (1/1) ... [2025-03-08 18:12:41,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41" (1/1) ... [2025-03-08 18:12:41,502 INFO L138 Inliner]: procedures = 678, calls = 1548, calls flagged for inlining = 54, calls inlined = 10, statements flattened = 698 [2025-03-08 18:12:41,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 18:12:41,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 18:12:41,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 18:12:41,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 18:12:41,516 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41" (1/1) ... [2025-03-08 18:12:41,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41" (1/1) ... [2025-03-08 18:12:41,526 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41" (1/1) ... [2025-03-08 18:12:41,592 INFO L175 MemorySlicer]: Split 338 memory accesses to 6 slices as follows [238, 2, 6, 3, 82, 7]. 70 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 0, 1, 10, 5]. The 252 writes are split as follows [232, 0, 2, 1, 17, 0]. [2025-03-08 18:12:41,592 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41" (1/1) ... [2025-03-08 18:12:41,592 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41" (1/1) ... [2025-03-08 18:12:41,624 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41" (1/1) ... [2025-03-08 18:12:41,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41" (1/1) ... [2025-03-08 18:12:41,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41" (1/1) ... [2025-03-08 18:12:41,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41" (1/1) ... [2025-03-08 18:12:41,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 18:12:41,655 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 18:12:41,657 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 18:12:41,657 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 18:12:41,658 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41" (1/1) ... [2025-03-08 18:12:41,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:12:41,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:12:41,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 18:12:41,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 18:12:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-03-08 18:12:41,704 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-03-08 18:12:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 18:12:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-08 18:12:41,705 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-08 18:12:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-08 18:12:41,706 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-08 18:12:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-08 18:12:41,706 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-08 18:12:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-08 18:12:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-08 18:12:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-08 18:12:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-08 18:12:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-08 18:12:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-08 18:12:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 18:12:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 18:12:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 18:12:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 18:12:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 18:12:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 18:12:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-08 18:12:41,707 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-08 18:12:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 18:12:41,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 18:12:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 18:12:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 18:12:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2025-03-08 18:12:41,707 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2025-03-08 18:12:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 18:12:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 18:12:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 18:12:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-08 18:12:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-08 18:12:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-08 18:12:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 18:12:41,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 18:12:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-08 18:12:41,708 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-08 18:12:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-03-08 18:12:41,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-03-08 18:12:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-03-08 18:12:41,708 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-03-08 18:12:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-08 18:12:41,708 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-08 18:12:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-08 18:12:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-08 18:12:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-08 18:12:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-08 18:12:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-08 18:12:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-08 18:12:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2025-03-08 18:12:41,709 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2025-03-08 18:12:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 18:12:41,709 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 18:12:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 18:12:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 18:12:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 18:12:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 18:12:41,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-08 18:12:41,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-08 18:12:41,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-08 18:12:41,711 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-08 18:12:41,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2025-03-08 18:12:41,711 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-08 18:12:41,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 18:12:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 18:12:41,955 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 18:12:41,957 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 18:12:41,990 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-08 18:12:42,032 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-03-08 18:12:42,057 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-08 18:12:42,148 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7462: havoc aws_priority_queue_backpointers_valid_#t~ret686#1;havoc aws_priority_queue_backpointers_valid_#t~short687#1; [2025-03-08 18:12:42,197 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3268: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-03-08 18:12:42,199 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-08 18:12:47,235 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7506: havoc aws_priority_queue_capacity_#t~ret696#1; [2025-03-08 18:12:47,292 INFO L? ?]: Removed 145 outVars from TransFormulas that were not future-live. [2025-03-08 18:12:47,292 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 18:12:47,302 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 18:12:47,302 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 18:12:47,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:12:47 BoogieIcfgContainer [2025-03-08 18:12:47,303 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 18:12:47,305 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 18:12:47,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 18:12:47,308 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 18:12:47,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:12:40" (1/3) ... [2025-03-08 18:12:47,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8a740a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:12:47, skipping insertion in model container [2025-03-08 18:12:47,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:12:41" (2/3) ... [2025-03-08 18:12:47,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8a740a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:12:47, skipping insertion in model container [2025-03-08 18:12:47,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:12:47" (3/3) ... [2025-03-08 18:12:47,310 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_capacity_harness_negated.i [2025-03-08 18:12:47,323 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 18:12:47,325 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_capacity_harness_negated.i that has 18 procedures, 184 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 18:12:47,371 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 18:12:47,382 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18a6e54c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 18:12:47,382 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 18:12:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 119 states have internal predecessors, (142), 47 states have call successors, (47), 17 states have call predecessors, (47), 17 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-08 18:12:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-08 18:12:47,397 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:12:47,397 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:12:47,397 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:12:47,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:12:47,403 INFO L85 PathProgramCache]: Analyzing trace with hash 671236619, now seen corresponding path program 1 times [2025-03-08 18:12:47,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:12:47,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739839532] [2025-03-08 18:12:47,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:12:47,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:12:51,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 18:12:52,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 18:12:52,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:12:52,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:12:52,485 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-08 18:12:52,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:12:52,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739839532] [2025-03-08 18:12:52,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739839532] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 18:12:52,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931967294] [2025-03-08 18:12:52,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:12:52,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:12:52,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:12:52,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 18:12:52,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 18:12:56,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 18:12:57,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 18:12:57,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:12:57,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:12:57,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 4508 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 18:12:57,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 18:12:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-08 18:12:57,186 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 18:12:57,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931967294] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:12:57,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 18:12:57,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 18:12:57,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872425694] [2025-03-08 18:12:57,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:12:57,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 18:12:57,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:12:57,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 18:12:57,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 18:12:57,208 INFO L87 Difference]: Start difference. First operand has 184 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 119 states have internal predecessors, (142), 47 states have call successors, (47), 17 states have call predecessors, (47), 17 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-08 18:12:57,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:12:57,238 INFO L93 Difference]: Finished difference Result 345 states and 466 transitions. [2025-03-08 18:12:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 18:12:57,239 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 140 [2025-03-08 18:12:57,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:12:57,246 INFO L225 Difference]: With dead ends: 345 [2025-03-08 18:12:57,246 INFO L226 Difference]: Without dead ends: 179 [2025-03-08 18:12:57,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 18:12:57,254 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 18:12:57,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 18:12:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-03-08 18:12:57,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2025-03-08 18:12:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 115 states have internal predecessors, (136), 47 states have call successors, (47), 17 states have call predecessors, (47), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-08 18:12:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 229 transitions. [2025-03-08 18:12:57,298 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 229 transitions. Word has length 140 [2025-03-08 18:12:57,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:12:57,299 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 229 transitions. [2025-03-08 18:12:57,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-08 18:12:57,300 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 229 transitions. [2025-03-08 18:12:57,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-08 18:12:57,301 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:12:57,302 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:12:57,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 18:12:57,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 18:12:57,503 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:12:57,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:12:57,503 INFO L85 PathProgramCache]: Analyzing trace with hash -799582070, now seen corresponding path program 1 times [2025-03-08 18:12:57,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:12:57,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132721507] [2025-03-08 18:12:57,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:12:57,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:13:01,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 18:13:01,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 18:13:01,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:13:01,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:13:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2025-03-08 18:13:02,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:13:02,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132721507] [2025-03-08 18:13:02,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132721507] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:13:02,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 18:13:02,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 18:13:02,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141885509] [2025-03-08 18:13:02,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:13:02,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 18:13:02,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:13:02,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 18:13:02,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 18:13:02,331 INFO L87 Difference]: Start difference. First operand 179 states and 229 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2025-03-08 18:13:02,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:13:02,850 INFO L93 Difference]: Finished difference Result 304 states and 389 transitions. [2025-03-08 18:13:02,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 18:13:02,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 140 [2025-03-08 18:13:02,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:13:02,853 INFO L225 Difference]: With dead ends: 304 [2025-03-08 18:13:02,853 INFO L226 Difference]: Without dead ends: 179 [2025-03-08 18:13:02,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 18:13:02,854 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 12 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 18:13:02,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 811 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 18:13:02,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-03-08 18:13:02,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2025-03-08 18:13:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 115 states have internal predecessors, (135), 47 states have call successors, (47), 17 states have call predecessors, (47), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-08 18:13:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 228 transitions. [2025-03-08 18:13:02,869 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 228 transitions. Word has length 140 [2025-03-08 18:13:02,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:13:02,869 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 228 transitions. [2025-03-08 18:13:02,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2025-03-08 18:13:02,870 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 228 transitions. [2025-03-08 18:13:02,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-08 18:13:02,872 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:13:02,872 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:13:02,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 18:13:02,872 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:13:02,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:13:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash 151945090, now seen corresponding path program 1 times [2025-03-08 18:13:02,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:13:02,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814054638] [2025-03-08 18:13:02,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:13:02,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:13:06,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-08 18:13:06,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-08 18:13:06,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:13:06,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:13:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-03-08 18:13:08,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:13:08,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814054638] [2025-03-08 18:13:08,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814054638] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 18:13:08,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895400877] [2025-03-08 18:13:08,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:13:08,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:13:08,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:13:08,086 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 18:13:08,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 18:13:12,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-08 18:13:12,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-08 18:13:12,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:13:12,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:13:12,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 4558 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 18:13:12,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 18:13:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-03-08 18:13:14,213 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 18:13:14,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895400877] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:13:14,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 18:13:14,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-08 18:13:14,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157236586] [2025-03-08 18:13:14,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:13:14,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 18:13:14,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:13:14,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 18:13:14,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-08 18:13:14,214 INFO L87 Difference]: Start difference. First operand 179 states and 228 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2025-03-08 18:13:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:13:17,977 INFO L93 Difference]: Finished difference Result 323 states and 418 transitions. [2025-03-08 18:13:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 18:13:17,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 148 [2025-03-08 18:13:17,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:13:17,980 INFO L225 Difference]: With dead ends: 323 [2025-03-08 18:13:17,980 INFO L226 Difference]: Without dead ends: 181 [2025-03-08 18:13:17,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2025-03-08 18:13:17,981 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 261 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-08 18:13:17,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1035 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-08 18:13:17,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-03-08 18:13:17,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2025-03-08 18:13:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 115 states have (on average 1.182608695652174) internal successors, (136), 117 states have internal predecessors, (136), 47 states have call successors, (47), 17 states have call predecessors, (47), 18 states have return successors, (49), 46 states have call predecessors, (49), 46 states have call successors, (49) [2025-03-08 18:13:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 232 transitions. [2025-03-08 18:13:18,000 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 232 transitions. Word has length 148 [2025-03-08 18:13:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:13:18,001 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 232 transitions. [2025-03-08 18:13:18,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2025-03-08 18:13:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 232 transitions. [2025-03-08 18:13:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-08 18:13:18,003 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:13:18,003 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:13:18,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 18:13:18,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-08 18:13:18,204 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:13:18,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:13:18,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2056521705, now seen corresponding path program 1 times [2025-03-08 18:13:18,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:13:18,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379826245] [2025-03-08 18:13:18,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:13:18,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:13:21,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-08 18:13:21,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-08 18:13:21,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:13:21,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:13:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2025-03-08 18:13:23,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:13:23,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379826245] [2025-03-08 18:13:23,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379826245] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:13:23,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 18:13:23,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 18:13:23,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110113758] [2025-03-08 18:13:23,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:13:23,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 18:13:23,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:13:23,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 18:13:23,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 18:13:23,006 INFO L87 Difference]: Start difference. First operand 181 states and 232 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2025-03-08 18:13:24,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:13:24,000 INFO L93 Difference]: Finished difference Result 309 states and 396 transitions. [2025-03-08 18:13:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 18:13:24,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 163 [2025-03-08 18:13:24,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:13:24,003 INFO L225 Difference]: With dead ends: 309 [2025-03-08 18:13:24,003 INFO L226 Difference]: Without dead ends: 181 [2025-03-08 18:13:24,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 18:13:24,004 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 29 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 18:13:24,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 970 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 18:13:24,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-03-08 18:13:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2025-03-08 18:13:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 115 states have (on average 1.173913043478261) internal successors, (135), 117 states have internal predecessors, (135), 47 states have call successors, (47), 17 states have call predecessors, (47), 18 states have return successors, (49), 46 states have call predecessors, (49), 46 states have call successors, (49) [2025-03-08 18:13:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 231 transitions. [2025-03-08 18:13:24,013 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 231 transitions. Word has length 163 [2025-03-08 18:13:24,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:13:24,013 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 231 transitions. [2025-03-08 18:13:24,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2025-03-08 18:13:24,014 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 231 transitions. [2025-03-08 18:13:24,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-03-08 18:13:24,015 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:13:24,015 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:13:24,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 18:13:24,015 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:13:24,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:13:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1184350268, now seen corresponding path program 1 times [2025-03-08 18:13:24,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:13:24,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476682619] [2025-03-08 18:13:24,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:13:24,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:13:27,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-08 18:13:27,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-08 18:13:27,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:13:27,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:13:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2025-03-08 18:13:29,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:13:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476682619] [2025-03-08 18:13:29,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476682619] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 18:13:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626266850] [2025-03-08 18:13:29,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:13:29,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:13:29,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:13:29,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 18:13:29,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 18:13:33,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-08 18:13:33,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-08 18:13:33,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:13:33,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:13:34,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 4752 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 18:13:34,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 18:13:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2025-03-08 18:13:36,294 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 18:13:36,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626266850] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:13:36,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 18:13:36,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2025-03-08 18:13:36,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529621906] [2025-03-08 18:13:36,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:13:36,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 18:13:36,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:13:36,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 18:13:36,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-08 18:13:36,295 INFO L87 Difference]: Start difference. First operand 181 states and 231 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2025-03-08 18:13:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:13:41,560 INFO L93 Difference]: Finished difference Result 322 states and 413 transitions. [2025-03-08 18:13:41,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 18:13:41,561 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 179 [2025-03-08 18:13:41,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:13:41,562 INFO L225 Difference]: With dead ends: 322 [2025-03-08 18:13:41,562 INFO L226 Difference]: Without dead ends: 181 [2025-03-08 18:13:41,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2025-03-08 18:13:41,564 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 278 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-03-08 18:13:41,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1135 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2025-03-08 18:13:41,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-03-08 18:13:41,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2025-03-08 18:13:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 115 states have (on average 1.173913043478261) internal successors, (135), 117 states have internal predecessors, (135), 47 states have call successors, (47), 17 states have call predecessors, (47), 18 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2025-03-08 18:13:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 230 transitions. [2025-03-08 18:13:41,574 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 230 transitions. Word has length 179 [2025-03-08 18:13:41,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:13:41,574 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 230 transitions. [2025-03-08 18:13:41,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2025-03-08 18:13:41,574 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 230 transitions. [2025-03-08 18:13:41,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2025-03-08 18:13:41,575 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:13:41,576 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:13:41,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 18:13:41,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:13:41,776 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:13:41,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:13:41,777 INFO L85 PathProgramCache]: Analyzing trace with hash -138128071, now seen corresponding path program 2 times [2025-03-08 18:13:41,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:13:41,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64936495] [2025-03-08 18:13:41,777 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 18:13:41,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:13:45,364 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 194 statements into 2 equivalence classes. [2025-03-08 18:13:45,449 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 194 statements. [2025-03-08 18:13:45,449 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 18:13:45,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:13:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-08 18:13:47,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:13:47,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64936495] [2025-03-08 18:13:47,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64936495] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:13:47,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 18:13:47,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 18:13:47,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849917217] [2025-03-08 18:13:47,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:13:47,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 18:13:47,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:13:47,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 18:13:47,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 18:13:47,271 INFO L87 Difference]: Start difference. First operand 181 states and 230 transitions. Second operand has 6 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2025-03-08 18:13:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:13:47,651 INFO L93 Difference]: Finished difference Result 189 states and 238 transitions. [2025-03-08 18:13:47,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 18:13:47,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 194 [2025-03-08 18:13:47,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:13:47,653 INFO L225 Difference]: With dead ends: 189 [2025-03-08 18:13:47,653 INFO L226 Difference]: Without dead ends: 187 [2025-03-08 18:13:47,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 18:13:47,654 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 3 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 18:13:47,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1107 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 18:13:47,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2025-03-08 18:13:47,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2025-03-08 18:13:47,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 48 states have call successors, (48), 18 states have call predecessors, (48), 19 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2025-03-08 18:13:47,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 235 transitions. [2025-03-08 18:13:47,669 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 235 transitions. Word has length 194 [2025-03-08 18:13:47,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:13:47,670 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 235 transitions. [2025-03-08 18:13:47,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2025-03-08 18:13:47,670 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 235 transitions. [2025-03-08 18:13:47,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2025-03-08 18:13:47,671 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:13:47,671 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:13:47,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 18:13:47,671 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:13:47,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:13:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash -792125088, now seen corresponding path program 3 times [2025-03-08 18:13:47,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:13:47,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177739134] [2025-03-08 18:13:47,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 18:13:47,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:13:51,291 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 209 statements into 7 equivalence classes. [2025-03-08 18:13:53,045 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 64 of 209 statements. [2025-03-08 18:13:53,045 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 18:13:53,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:13:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2025-03-08 18:13:54,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:13:54,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177739134] [2025-03-08 18:13:54,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177739134] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 18:13:54,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289693982] [2025-03-08 18:13:54,786 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 18:13:54,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:13:54,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:13:54,788 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 18:13:54,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 18:13:59,650 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 209 statements into 7 equivalence classes.